Table 3.
Univariate Analysis of Factors Associated With RTS (Yes vs No) After HTO a
| Outcome Measure | RTS (n = 210) | No RTS (n = 46) | P Value |
|---|---|---|---|
| Mean age at surgery, y (SD) | 50.4 (9.2) | 48.7 (8.2) | .25 b |
| Mean follow-up, y (SD) | 3.7 (1.0) | 3.6 (1.1) | .27 b |
| Female sex, n (%) | 81 (39) | 20 (43) | .54 c |
| Mean BMI, kg/m2 (SD) | 27.1 (3.8) | 28.5 (4.1) | .04 b |
| Side, right (%) | 106 (50) | 24 (52) | .84 c |
| ASA classification, n (%) | |||
| I | 131 (62) | 23 (50) | .25 c |
| II | 78 (37) | 23 (50) | |
| III | 1 (1) | — | |
| Indication, n (%) | |||
| Varus OA | 168 (80) | 38 (83) | .69 c |
| Valgus OA | 42 (20) | 8 (17) | |
| Wedge size, mm (SD) | 9.2 (3.2) | 9.7 (3.3) | .39 b |
| Level of impact 1 year preoperatively, n (%) | |||
| Low | 43 (25) | 14 (47) | .04 c |
| Intermediate | 64 (38) | 6 (20) | |
| High | 62 (37) | 10 (33) | |
| Sports participation 1 year preoperatively, n (%) | |||
| Yes | 169 (80) | 28 (61) | <.01 c |
| No | 41 (20) | 18 (39) | |
a
Boldface type indicates statistical significance at P < .10. ASA, American Society of Anesthesiologists; BMI, body mass index; HTO, high tibial osteotomy; OA, osteoarthritis; RTS, return to sport; —, no data available.
b
Independent samples t test.
c
Chi-square test or Fisher exact test in cases with <5 expected counts.